Encyclopedia
Gilding
Gilding (gilt): coating with gold-based alloys of thickness less than 0.5 micrometers, applied by any other method (excluding mechanical)
Source: "JEWELRY PRODUCTS. COATINGS WITH GOLD-BASED ALLOYS. GOST R 53196-2008 (ISO 10713:1992)"
(approved by the Order of Rosstandart dated December 25, 2008 No. 660-st)